54 citations · 186 across the 8 of their papers we have counts for
8 papers
Indirect spin dephasing via charge state decoherence in optical control schemes in quantum dots
A. Grodecka, P. Machnikowski, J. Förstner
We demonstrate that an optically driven spin of a carrier in a quantum dot undergoes indirect dephasing via conditional optically induced charge evolution even in the absence of an…
Theoretical study of phonon-assisted singlet-singlet relaxation in two-electron semiconductor quantum dot molecules
A. Grodecka, P. Machnikowski, J. Förstner
Phonon-assisted singlet-singlet relaxation in semiconductor quantum dot molecules is studied theoretically. Laterally coupled quantum dot structures doped with two electrons are co…
Phonon-assisted tunneling between singlet states in two-electron quantum dot molecules
A. Grodecka, P. Machnikowski, J. Förstner
We study phonon-assisted electron tunneling in semiconductor quantum dot molecules. In particular, singlet-singlet relaxation in a two-electron doped structure is considered. The i…
Optical control and decoherence of spin qubits in quantum dots
Pawel Machnikowski, Anna Grodecka, Carsten Weber +1
We discuss various methods of all-optical spin control in semiconductor quantum dots. We present different ways of rotating a single confined electron spin by optical coupling to a…
Interplay and optimization of decoherence mechanisms in the optical control of spin quantum bits implemented on a semiconductor quantum dot
A. Grodecka, C. Weber, P. Machnikowski +1
We study the influence of the environment on an optically induced rotation of a single electron spin in a charged semiconductor quantum dot. We analyze the decoherence mechanisms r…
Partly noiseless encoding of quantum information in quantum dot arrays against phonon-induced pure dephasing
A. Grodecka, P. Machnikowski
We show that pure dephasing of a quantum dot charge (excitonic) qubit may be reduced for sufficiently slow gating by collectively encoding quantum information in an array of quantu…